Australian woman Sara Connor will undergo assessment following another day of interrogations over the alleged murder of a Bali police officer.

Ms Connor's lawyer Erwin Siregar said the mother of two faced her third round of questioning on Thursday during which she was shown evidence, including the burnt remains of the clothing she and British man David Taylor set fire to in the days after Wayan Sudarsa's death.

He said she would undergo a psychiatric examination today - a week after her arrest.

The pair have been detained for their role in the alleged murder of local policeman, Wayan Sudarsa, who was found with 42 stab wounds to his head and neck on Kuta beach.

Mr Siregar said Ms Connor had not "even the slightest motive to kill" the police officer and he was now urging that if the matter goes to court, Ms Connor should face the offence of participating in a manslaughter rather than a murder charge.

If convicted, she could face a maximum of three years in prison, he said.

He said she had told police on Thursday: "I only wanted to separate (them) ...I wanted to help the victim.

"I'm very sad and sympathise (with) the victim's family deeply. I want to help the victim's family and I want to meet my family. I'm not guilty and I want to go home immediately," Ms Connor allegedly told police.

Mr Siregar said she also denies it was her idea to burn the clothes as police have alleged.

“He gathers some branches and put the pants on top of the heap… then lit it up using matches,” he said.

Meanwhile, Mr Taylor, who turned 34 on Thursday, is alleging that Ms Connor hit Mr Sudarsa during their scuffle on Kuta Beach on August 16.

"Sara said her left thigh got bitten by the victim and then Sara hit him," his lawyer Haposhan Sihombing said.

"He regrets it and he will apologise to the victim's family and write a letter.

Sara Connor and her British boyfriend David Taylor. (9NEWS) ()

"Whether (the statements) between our client and Sara match or not, it is the investigator job to confront."

Mr Taylor has allegedly told police that the two were under the influence of alcohol when they became embroiled in a fight with Mr Sudarsa - believing he knew something about Ms Connor's lost purse.

"(Due to the alcohol) when he asked someone and that someone said, 'I'm a policeman', he searched the police instead," Mr Sihombing said.

"He should have had sense of obedience (to the policeman).

"Seeing her boyfriend struggling, especially when they're under the influence of alcohol, Sara pulled the victim because she saw her boyfriend in trouble.

"If Sara hadn't pulled (the victim), David could have not survived. So, they were together (fighting the victim).

"The fact that they're dating together and under the influence of alcohol, that added more courage to win that fight."